CN101755300B - Projector - Google Patents

Abstract

Provided is a projector including: light sources (1R, 1G, 1B); a light adjustment unit (6) for adjusting the light outputted from the light sources in accordance with an image signal; a display control unit (41) which outputs the image signal containing a periodical main image signal to the light adjustment unit to perform display control; a projection unit which projects an image based on the light adjusted by the light adjustment unit; and an imaging unit (40) which captures an image displayed by the light projected from the projection unit. The display control unit inserts a correction image signal between the periodical main image signals. The correction image signal is used to project a correction image which is viewed as a white or gray uniform screen when temporal integration is performed.

Description

Projecting apparatus

Technical field

The present invention relates to a kind of by image projection to the projecting apparatus that is projected object.

Background technology

In recent years, people need portable splendid small projector, and the research and development that can be contained in the pocket projecting apparatus carrying in pocket also just constantly advance.Along with this trend toward miniaturization, also in research, by use LED (Light Emitting Diode) or laser, replace bulb to be used as light source, the miniaturization of the optical system of the projecting apparatus being formed by light source, spatial modulation element and projection optical system.

The small projector of pocket can be carried at any time, and its using method differs widely with fixed projecting apparatus in the past.The portability of this small projector is higher, user hand-holdable projecting apparatus near wall or project objects with rating image.The small projector of this pocket even can be when walking etc. be used in moving process.Therefore,, for the small projector of pocket, need imagination as the situation that object changes at any time that is projected of screen.

In the case, as the screen that is projected object, be not limited to flat shape, nor be limited to white.In order also to manifest in this case the image of high image quality, comparatively it is desirable to, according to the surface configuration or the color correct projected image that are projected object.

Therefore,, in order to manifest the image of high image quality, the small projector of pocket must have and obtains the information relevant to the shape of object as screen or color, and the debugging functions based on these Information revision projected images.

At this, the modification method of projected image be in the past by projecting apparatus be fixed on desk first-class after, before projected images, the test pattern image as datum-correction graph picture is projected to screen etc. and is projected object.Then, by taking this test pattern image identification, be projected the shape of object, carry out image correction.

Also there is in addition a kind of like this projecting apparatus, that is, because the image of general projection is rectangle, therefore detect four angles of projected image, distinguish that whether projected image is in echelon crooked, and distinguish that based on this result carries out trapezoidal crooked correction etc.

The modification method of above-mentioned projected image is in the past to take fixed projecting apparatus as prerequisite, once projected image is revised, substantially no longer changes the relative position of projecting apparatus and screen, the correction that projected image is stipulated.But as the high small projector of portability, if changed at any time as the object that is projected of screen, projected image also must be carried out correction at any time along with being projected the variation of object.Therefore, with the relative position of projecting apparatus and screen, immobilize and cannot revise rightly for the modification method of the projected image in the past of prerequisite.

That is,, when using the trapezoidal modification method at four angles detecting projected image, under the state that can be projected at image, at any time image is revised.But the method at four angles of this detected image is that to take be prerequisite by image projection in the screen of plane substantially, cannot detect the distortion of projected image inner side etc.In the situation that the high pocket projecting apparatus of portability, as mentioned above, the object of projection is not limited to the plane as wall.Therefore, also will imagine the situation that is projected to curved surface or is projected to the object of the irregular 3D shape of tool, and modification method in the past cannot be tackled these situations.

But, in Japanese Patent Publication communique JP No. 2005-94599 (hereinafter referred to as " patent documentation 1 "), due to image A and the image B of two kinds of images that show test pattern image overlapping, therefore, user can see the overlapping image that has two test pattern image.Like this, because test pattern image is overlapped in, originally want the image watched, therefore, image quality inevitably can be significantly deteriorated.And, in order to detect test pattern image, need to be by the operation processing function that the computing of image A and image B is extracted out to test pattern from the captured image of camera head, this problem thereby existence processing complicates.

Therefore, the modification method of the projected image of the small projector changing at any time about the projected objects of the object as screen, for example, propose modification method as Patent Document 1.The modification method of this patent documentation 1 is to make test pattern be overlapped in picture signal, detects test pattern image when watching image.At this, if overlap test pattern image merely only can be difficult to extract out test pattern for some picture signal so.Therefore, in patent documentation 1, owing to can being difficult to extract out test pattern for some picture signal, so make in advance the whole grizzles of white background, two images to overlapping test pattern image carry out projection, shooting, by two images are carried out to computing, to emphasize test pattern image, extracted out.

But in the modification method of patent documentation 1, owing to having shown two kinds of images (image A, image B) of test pattern image overlapping, therefore, beholder can see the overlapping image that has test pattern.That is,, because test pattern image is formed on the image of originally wanting to watch, therefore can cause image quality significantly deteriorated.And, in order to detect test pattern, need to carry out computing and the operation processing function of extracting test pattern out to the image A being obtained by camera head and image B, therefore there is the processing that is used for revising projected image this problem that complicates.

Summary of the invention

The object of the present invention is to provide a kind of projecting apparatus, what this projecting apparatus can be by simple STRUCTURE DEPRESSION master image image quality is deteriorated, and coordinates the object that is projected changing at any time to insert datum-correction graph picture.

In order to realize above-mentioned object, projecting apparatus involved in the present invention comprises: light source; The modulating sections of the light penetrating from described light source being modulated based on picture signal; By the described image signal output that comprises main image signal periodically to described modulating sections and shows the display control unit of control; Projection is through the Projection Division of the light of described modulating sections modulation; The image pickup part of the image of the light of shooting based on going out from the projection of described Projection Division; A plurality of described datum-correction graph picture based on being photographed with different frames by described image pickup part, to being projected the variation of object, predict the arithmetic processing section of computing, wherein, described display control unit will insert between described periodicity main image signal with the datum-correction graph image signal of image for projection modification, and described datum-correction graph similarly is to be visually the image of the uniform picture of white or grey during by image time integral.

According to above-mentioned structure, be visually the datum-correction graph picture of the uniform picture of white or grey owing to inserting image time integral beyond master image between the signal in periodicity master image, therefore, watch the user of master image can not see datum-correction graph picture.Thus, can suppress the deteriorated of master image image quality and insert datum-correction graph picture.

Other objects of the present invention, feature and advantage can be fully understood by content shown below.And advantage of the present invention becomes clear and definite by the following explanation with reference to accompanying drawing.

Accompanying drawing explanation

Fig. 1 means the key diagram of the schematic configuration of the projecting apparatus that one embodiment of the invention are related.

Fig. 2 A means the key diagram of an example of the right moment for camera of the insertion opportunity of the main image signal of all kinds that one embodiment of the invention are related, the insertion opportunity of datum-correction graph image signal and datum-correction graph picture.Fig. 2 B means the key diagram of the master image of Fig. 2 A and an example of datum-correction graph picture.

Fig. 3 means the key diagram of each pattern image shown in Fig. 2 A and Fig. 2 B and the overlapping image forming of these pattern images.

Fig. 4 A means the key diagram of an example of the right moment for camera of the insertion opportunity of the main image signal of all kinds that one embodiment of the invention are related, the insertion opportunity of datum-correction graph image signal and datum-correction graph picture.Fig. 4 B means the key diagram of the master image of Fig. 4 A and an example of datum-correction graph picture.

Fig. 5 A means the key diagram of situation of the pattern image of projection white laser.Fig. 5 B means the key diagram of situation of the pattern image of projection one-wavelength laser.

Fig. 6 A means the key diagram of an example of the right moment for camera of the insertion opportunity of the main image signal of all kinds that one embodiment of the invention are related, the insertion opportunity of datum-correction graph image signal and datum-correction graph picture.Fig. 6 B means the key diagram of the master image of Fig. 6 A and an example of datum-correction graph picture.

Fig. 7 A means pattern image projection in the key diagram of the plane situation that is projected object.Fig. 7 B means the key diagram of captured pattern image.

Fig. 8 A means the key diagram of an example of the right moment for camera of the insertion opportunity of the main image signal of all kinds that other embodiment of the present invention are related, the insertion opportunity of datum-correction graph image signal and datum-correction graph picture.Fig. 8 B means the key diagram of the master image of Fig. 8 A and an example of datum-correction graph picture.

Fig. 9 means even image projection in the key diagram of the different situation that is projected object of reflectivity part.

Figure 10 A means the key diagram of an example of the right moment for camera of the insertion opportunity of the main image signal of all kinds that other embodiment of the present invention are related, the insertion opportunity of datum-correction graph image signal and datum-correction graph picture.Figure 10 B means the key diagram of the master image of Figure 10 A and an example of datum-correction graph picture.

Figure 11 means the key diagram of the comparison of the color rendering scope of LASER Light Source and the color rendering scope of LED.

Figure 12 A means that it is the key diagram of situation of image in 2 D code that the datum-correction graph of institute's projection looks like.Figure 12 B means that it is the key diagram of situation of image in 2 D code that the datum-correction graph of institute's projection looks like.

Figure 13 means that the related a plurality of projecting apparatus of other embodiment of the present invention send or receive the key diagram of the situation of synchronizing signal.

Figure 14 means that the projecting lens of projection optical system doubles as the key diagram into the structure of the capture lens of image pickup optical system.

Figure 15 A means the key diagram that uses the situation of half-reflecting mirror in the structure shown in Figure 14 as an example.Figure 15 B means the key diagram that uses the situation of polarization beam apparatus in the structure shown in Figure 14 as an example.

Figure 16 means the key diagram of the optical system of using reflective LCOS and polarization beam apparatus.

Figure 17 is for the key diagram of sweep type projection pattern is described.

Figure 18 means the key diagram of scanned pattern image and captured pattern image.

Figure 19 means the key diagram of scanned pattern image and captured pattern image.

Figure 20 A means projecting apparatus and is projected the relative angle of object and the key diagram of captured pattern image.Figure 20 B means the projecting apparatus that is different from Figure 20 A and is projected the relative angle of object and the key diagram of captured pattern image.

Figure 21 means the key diagram of the schematic configuration of the projecting apparatus that other embodiment of the present invention are related.

Figure 22 A means the key diagram of the application examples of the projecting apparatus that one embodiment of the invention are related.Figure 22 B means the key diagram of the application examples of the projecting apparatus that one embodiment of the invention are related.

Figure 23 means the key diagram of the schematic configuration of the ing image display device that one embodiment of the invention are related.

Figure 24 means the schematic diagram of the schematic configuration of the photodetector that the ing image display device of Figure 23 possesses.

Figure 25 A means the key diagram of an example of detection signal of the photodetector of Figure 24.Figure 25 B means other routine key diagrams of detection signal of the photodetector of Figure 24.

Figure 26 A means the key diagram of the reflection light quantity of scan line on the face of being projected and each wavelength on scan line.Figure 26 B means the key diagram of the reflection light quantity of scan line on the face of being projected and each wavelength on scan line.

Figure 27 A means the key diagram of the reflection light quantity of scan line on the face of being projected and each wavelength on scan line.Figure 27 B means the key diagram of the reflection light quantity of scan line on the face of being projected and each wavelength on scan line.

Figure 28 means the key diagram of the schematic configuration of the ing image display device that one embodiment of the invention are related.

Figure 29 means the key diagram of the schematic configuration of the ing image display device that other embodiment of the present invention are related.

Figure 30 means the key diagram of the schematic configuration of the ing image display device that other embodiment of the present invention are related.

Figure 31 means the hold concurrently vertical view of light source output detector of photodetector that the ing image display device of Figure 30 possesses.

Figure 32 means the key diagram of the schematic configuration of the ing image display device that other embodiment of the present invention are related.

Embodiment

Below, with reference to accompanying drawing, various embodiments of the present invention are described.

(embodiment 1)

Below, referring to figs. 1 through Fig. 7, the projecting apparatus that embodiments of the invention 1 are related is described.

Fig. 1 represents the schematic configuration of the related projecting apparatus of the embodiment of the present invention 1 22.

As shown in Figure 1, this projecting apparatus 22 comprises LASER Light Source 1R of all kinds, LASER Light Source 1G, LASER Light Source 1B, collimating lens (collimator lens) 4, poly-lens (lenticular lens) 5, spatial modulation element 6, projecting lens 7 and dichronic mirror (dichroic mirror) 12.From LASER Light Source 1R, 1G, 1B, penetrate successively the laser of redness, blueness, green.Green laser is reflected by mirror 17 after becoming the light of almost parallel by collimating lens 4, and sees through dichronic mirror 12.Blue laser closes ripple by dichronic mirror 12 with green laser after becoming the light of almost parallel by collimating lens 4.Red laser closes ripple by dichronic mirror 12 with green laser and blue laser after becoming the light of almost parallel by collimating lens 4.

The laser that closes ripple becomes diffused light by poly-lens 5, and injects spatial modulation element 6.Spatial modulation element 6 is modulated incident light based on periodicity main image signal.The light projection that projecting lens (Projection Division) 7 is modulated process spatial modulation element 6 is in screen (not shown).And, the image that the light display that imaging apparatus 40 shootings are gone out by projecting lens 7 projections is shown.The captured image of imaging apparatus 40 is processed by image correction controller 41.Image correction controller (display control unit/correction portion) 41 shows control by comprising periodically image signal output to the spatial modulation element 6 of main image signal.

Secondly, with reference to Fig. 2 A and Fig. 2 B, the insertion opportunity of datum-correction graph image signal and the right moment for camera of imaging apparatus 40 are described.

Fig. 2 A and Fig. 2 B represent that the RGB insertion opportunity of main image signal of all kinds of controlling based on image correction controller 41 is, the opportunity that 40 pairs of pattern images of the insertion opportunity of datum-correction graph image signal and imaging apparatus are taken.

As shown in Figure 2 A and 2 B, the imaging apparatus (image pickup part) 40 that the present embodiment is related, with projection as the pattern image A of datum-correction graph picture and synchronously take datum-correction graph picture each opportunity of pattern image B.

The projecting apparatus 22 that the present embodiment is related, while utilizing, partitioning scheme, as image display pattern, switches laser of all kinds at high speed.That is, LASER Light Source 1R of all kinds, 1G, 1B light at regular intervals, and R, G, the B image of all kinds that forms master image coordinates this to light opportunity successively by periodically projection.Now, more than the driving frequency of the image that R, G, B are of all kinds is at least 60Hz, more than comparatively it is desirable to 180Hz.If driving frequency is below 60Hz, can produce significantly and be called as the color after image noise that color interrupts noise (color breaking noise), cause image quality significantly deteriorated.On the other hand, if driving frequency is driving frequency more than 180Hz, user can feel that color interrupts noise hardly.

In the structure of Fig. 2 A, after the one group of master image forming of all kinds by R, G, B is projected, until next the group master image consisting of R, G, B is inserted pattern image A before being projected, after one group of master image of this R, G, B is projected, until next the group master image again consisting of R, G, B is inserted pattern image B before being projected.Then, similarly between the one group of master image being projected successively, alternately insert pattern image A and pattern image B.

; by the control of the image correction controller (display control unit) 41 shown in Fig. 1; to with the datum-correction graph image signal of image, insert between periodicity main image signal for projection modification, this datum-correction graph similarly is on master image image time integral after-vision in addition, to be the image of the uniform picture of white or grey.

Pattern image A and pattern image B are lighted and are shown simultaneously by LASER Light Source 1R, LASER Light Source 1G, LASER Light Source 1B.That is, each pattern image A of the present embodiment and B are not the pattern images being formed by monochromatic light, but the pattern image being formed by the overlapping light of red laser, green laser, blue laser.And R, G, B LASER Light Source 1R, LASER Light Source 1G of all kinds, the laser output power ratio of LASER Light Source 1B are configured to make this overlapping light to become white light.White light generally shows by black body radiation temperature.For example, in order to form the white light of the black body radiation temperature that is equivalent to 9000K, the power output ratio of the red laser (wavelength is 640nm) penetrating from the projecting lens 7 of projecting apparatus 22, green laser (wavelength is 532nm), blue laser (wavelength is 448nm), according to red: green: indigo plant is 1: 0.83: 0.78.Like this, can make the light that pattern image A and pattern image B comprise is only white light.

The image that pattern image A shown in Fig. 3 presentation graphs 2A and Fig. 2 B, pattern image B and pattern image A and pattern image B are overlapping.Pattern image A and pattern image B are formed by white light.Therefore, the overlapping image of pattern image A and pattern image B is the image that only contains white light.In addition, the grid of pattern image A is partly white.On the other hand, the grid of pattern image B is partly black.Therefore,, if pattern image A and pattern image B are overlapping, can form uniform gray image (light is only white light).What see due to user is the overlapping image of pattern image A and pattern image B, therefore sees as gray image and being inserted in master image.

According to above-mentioned structure, the checked pattern image A of not direct viewing of user and pattern image B, but viewing graphic pattern image A and pattern image B are through the overlapping uniform gray image forming, and therefore, can suppress the deteriorated of master image image quality.And, by using checked pattern image as datum-correction graph picture, can easily know concavo-convex as the projectual surface of screen.

In addition, comparatively it is desirable to have following functions, that is, when wanting to watch the master image of high image quality more, according to the contrast of image, adjust the briliancy of pattern image.Projecting apparatus 22 utilizes the captured image of imaging apparatus 40 to obtain the contrast of projected image, and according to this contrast, adjusts the briliancy of pattern image.When the contrast of image is higher, though light a little less than, user also can see image.Therefore, comparatively it is desirable to, the briliancy of pattern image is set lowlyer.Like this, even if will insert periodically between main image signal with the datum-correction graph image signal of image for projection modification, projection modification with the light of image also a little less than, therefore can prevent that master image from bleaching, thereby deteriorated less image can be provided.And, owing to offering the power of LASER Light Source, also diminish, therefore can realize the low projecting apparatus of power consumption.

In the structure shown in Fig. 4 A and Fig. 4 B, use one group of (R) image, (G) image of projection successively and (B) image as each pattern image of pattern image A and pattern image B.After being inserted successively R, G, B main image signal of all kinds for projection modification respectively with R, G, the B of image datum-correction graph image signal of all kinds, these main image signals are for (R) image, (G) image, (B) image of projection formation master image successively.

In the structure of Fig. 4 A, also be insertion opportunity of each datum-correction graph image signal between periodicity main image signal, so that by the controlling projection datum-correction graph picture of the image correction controller (display control unit) 41 shown in Fig. 1, this datum-correction graph similarly is on the image time integral after-vision beyond master image, to be the image of the uniform picture of white or grey.

And, on the opportunity that 40 couples of pattern image A as datum-correction graph picture of imaging apparatus and pattern image B take, synchronize with the opportunity of these pattern images of projection.

According to above-mentioned structure, when taking datum-correction graph as A and B, due to the impact that can reduce as the reflectivity of the projectual surface of screen, therefore, can take accurately these datum-correction graphs as A and B.

In addition, comparatively it is desirable to, spatial modulation element 6 can be modulated above with 360Hz.In the case, owing to modulating above with 60Hz R, G, B image the projection of all kinds of master image, therefore can suppress the flicker of master image.

Referring to Fig. 5 A and Fig. 5 B, the usage of holding the shape of projectual surface with the pattern image of the present embodiment is described.

Fig. 5 A and Fig. 5 B are projected in the different situation that is projected object of reflectivity part, are projected the situation that is projected object in this and compare with the formed pattern image of monochromatic light the formed pattern image of white light.Fig. 5 A means the figure of situation of the pattern image of projection white light, and Fig. 5 B means the figure of situation of the pattern image of red (monochromatic light) laser of projection.If as the reflectivity of the projectual surface of screen according to incident light wavelength and partly different, compare with the white light (Fig. 5 A) that red laser, green laser, blue laser coincidence form, the poor change of light and shade of pattern image that the laser of all kinds (monochromatic light) of R, G or B is projected object reflection is large, thereby can easily know the distortion of pattern image.

What reflectivity part was different is projected in object 81, and the reflectivity of the green laser in the region 82 of dotted line is less than the reflectivity in other regions.The checked pattern image going out from projecting apparatus (not shown) projection, the in the situation that of white light, in the region 83 of checked pattern image, become open-wire line as shown in Figure 5A, and low owing to being arranged in the reflectivity of green laser in 82Nei region, region 84, therefore compare with region 83, in this region 84, become concealed wire.

On the other hand, in Fig. 5 B of the pattern image of projection redness, the reflectivity of the red laser in region 82 is identical with other regions.Therefore, when projection goes out red pattern image, the open-wire line that 85Yu region, region 86 is identical briliancy.Its result, when taking pattern image, compares with the situation of white light, and the briliancy of the open-wire line of checked pattern image is more even, thus the state of identification icon image easily.By being set as this structure, pattern image easy to use carries out image processing.

In addition, also can use do not possess coloured image image pickup part imaging apparatus as the related imaging apparatus 40 of present embodiment.In the case, can only utilize the light and shade of the briliancy of captured pattern image to carry out image correction.Like this, by using the imaging apparatus of the camera function that does not possess coloured image, can realize the cost degradation of projecting apparatus.

In the structure of Fig. 6 A, after the main image signal of all kinds being projected successively at (R) image, (G) image, (B) image of making to form master image, insert respectively and make to form each datum-correction graph image signal that (R) image, (G) image, (B) image of pattern image A are projected successively.On the other hand, after R, the G, the B that pattern image B are projected datum-correction graph image signal of all kinds is inserted simultaneously and is made to form each main image signal that (R) image, (G) image, (B) image of master image be projected successively.Like this, owing to can reducing the modulation number of times of spatial modulation element 6, therefore, can realize the power reducing of projecting apparatus.

Then, to using the image correction of the related projecting apparatus 22 of the present embodiment to process, describe.In projecting apparatus 22, due to the capture lens of projecting lens 7 and imaging apparatus 40 from, so projection and take between there is parallax.Therefore from projecting lens 7 projections, in being projected pattern image that the pattern image of object and imaging apparatus 40 take, be, different image on parallax only.

Fig. 7 A and Fig. 7 B mean the figure of projection and the shooting of pattern image.Fig. 7 A be illustrated in projecting lens 7 with plane be projected object over against state under the situation of projection pattern image.Fig. 7 B represents that the pattern image being projected shown in 40 couples of Fig. 7 A of imaging apparatus takes the image of gained.Projecting lens 7 by pattern image 56 projections in the plane object (not shown) that is projected.Now, the parallax between imaging apparatus 40 bases and projecting lens 7 is taken the pattern image 57 of distortion as shown in Figure 7 B.

So, because projecting lens 7 and imaging apparatus 40 exist parallax, therefore, and concavo-convex according to the relative angle of projecting lens 7 and projectual surface or projectual surface, captured pattern image can change.According to said structure, the related projecting apparatus 22 of the present embodiment is so formed, and by captured pattern image and for example pattern image 57 are made comparisons, can identify projecting lens 7 and be projected the concavo-convex of the relative angle of object or projectual surface.The projecting apparatus 22 related according to the present embodiment, for example, allows master image is crooked so that the pattern image of taking is pattern image 57, can revise image thus.By being set as this structure, even when projecting lens 7 changes with the relative angle that is projected object, or projectual surface exists when concavo-convex, and the master image of the high image quality that distortion is few also can be provided.

In addition, also can generate at any time datum-correction graph picture, and this datum-correction graph picture is inserted periodically between master image, this datum-correction graph similarly is the color that is projected object itself or the briliancy of offsetting as screen, and is being projected after by time integral in the face of object as the image of uniform white or grey visually.; also can generate the datum-correction graph image signal with image for projection modification; and described datum-correction graph image signal is inserted between described periodicity main image signal; this datum-correction graph similarly is the color that is projected object itself or the briliancy being photographed by imaging apparatus 40 in offsetting during the non-projection of the master image with assigned frequency projection, and being projected after by time integral in the face of object is the image of uniform white or grey visually.

In the case, even when projecting apparatus 22 changes at any time with the relative position that is projected object, on the opportunity in also can be during the non-projection of the master image with assigned frequency projection, by imaging apparatus 40, take and be projected object itself at any time.Then, generate to offset at any time the color or the briliancy that are projected object itself, be projected after by time integral in the face of object as the datum-correction graph picture of white or grey uniformly visually, and this datum-correction graph picture is inserted between periodicity master image.Like this, owing in fact also can, by datum-correction graph picture for revising color or the briliancy of master image, therefore can realizing the more projecting apparatus of the master image of high image quality of projection.

In addition, pattern image is not limited to carreau, can be also hound's-tooth or concentric circles decorative pattern etc.Certainly the also multiple patterns image that utilizes capable of being combined.

In addition, also can use DMD (the Digital Micro-mirror Device: the registered trade mark of U.S. Texas Instruments) as spatial modulation element being formed by a plurality of micro mirrors.Because the driving frequency of DMD is up to about 720Hz, therefore can further reduces color and interrupt (color breaking).

In addition, in the situation that laser is used as to light source, comparatively it is desirable to, the spatial modulation element 6 of projecting apparatus 22 is less, and the focal length of projecting lens 7 is shorter, diaphragm (diaphragm stop) value is large.For example, when the pel spacing of spatial modulation element 6 is 5 μ m, the focal length of projecting lens 7 is 6mm, the stop value of projecting lens 7 is 2, projecting apparatus 22 and when being projected distance between object and being 500mm, if will allow that blur circle (permissible circle of confusion) is made as 1 pixel, the depth of field is 142mm.Focal length is shorter, and diaphragm more shrinks, and the depth of field of projecting lens 7 is darker.If the depth of field is darker, even if be projected so, on object, exist concavo-convexly, also can shoot the less pattern image of fuzzy sense.Therefore, can improve the precision of image correction, thereby the master image of high image quality can be provided.And when the stop value of projecting apparatus 22 is identical with visual angle, the size of the size of projecting lens 7 and spatial modulation element 6 increases pro rata.Therefore, if the size of spatial modulation element 6 is little, can reduce the size of projecting lens 7, thereby realize small-sized projecting apparatus 22.In addition,, due to laser is used as to light source, even if therefore spatial modulation element 6 is little, also can increase the stop value of illumination light.Reason is, because laser is close to desirable point-source of light, so optical extend (etendue) (the diffusion solid angle of the area of light source and light long-pending) is little, easily optically focused or form the light of almost parallel.If as light source, owing to can increasing the stop value of illumination light, so the design of projecting lens 7 becomes easily, thereby can realize projecting apparatus 22 cheaply by laser.

Comparatively it is desirable to, as the present embodiment, use LASER Light Source as light source of the present invention.

In the situation that using LASER Light Source, in the time of can realizing by the on/off of light source, cut apart image display pattern, can realize projecting apparatus cheaply.And, because light source itself is little, therefore can realize small-sized projecting apparatus.In addition, because the spectrum width of LASER Light Source is little, so color reprodubility is excellent, easily revises the color that is projected the master image on object.

In addition, also can use LED as the light source of projecting apparatus 22.The in the situation that of LED, because its cost ratio laser is more cheap, therefore can realize cost than using laser as the lower projecting apparatus 22 of the projecting apparatus of light source.

When using LED as light source, cut apart image display pattern owing to can realize by the on/off of light source time, therefore, can remove necessary colour wheel in the situation that of bulb source (color wheel), thereby can realize projecting apparatus cheaply.And, because light source itself is little, therefore can realize small-sized projecting apparatus.

(embodiment 2)

Below, with reference to Fig. 8 to Figure 11, the projecting apparatus that embodiments of the invention 2 are related is described.

The basic structure of the projecting apparatus 90 that the present embodiment the is related projecting apparatus 22 related with the embodiment 1 shown in Fig. 1 is identical, therefore uses same-sign detailed.

In the present embodiment, as datum-correction graph picture, with even image, replace the checked pattern image of embodiment 1.

Fig. 8 represents the projection opportunity of the even image A as datum-correction graph picture and the opportunity of the even image A of imaging apparatus 40 shooting of the present embodiment.

Evenly image A is the uniform image of briliancy being produced by the overlapping light forming of red laser, green laser and blue laser.And the laser output power ratio of setting red laser light source 1R, green laser light source 1G, blue laser light source 1B, can obtain white light while making above-mentioned laser of all kinds overlapping.Generally by black body radiation temperature, show white light.About the establishing method of laser output power ratio, can use the method identical with embodiment 1, therefore omit explanation herein.

In the present embodiment, also be by the control of the image correction controller (display control unit) 41 shown in Fig. 1, between periodicity main image signal, insert for projection modification the datum-correction graph image signal with image, this datum-correction graph similarly is on the image time integral after-vision beyond master image, to be the image of the uniform picture of white or grey.

Because even image A is the image of single white light, therefore, even if even image A is projected in to the master image that consists of one group of R, G, B and is organized by next between the master image that R, G, B form, user also can not aware the tone variations of master image.In addition,, if take the even image A being projected and know color and the light and shade of briliancy, can know the reflectivity corresponding to incident light wavelength as the projectual surface of screen.

So, when use pattern image as datum-correction graph as time, can easily know the reflectivity that is projected object as screen.

Fig. 9 means that being projected object exists the different part of reflectivity, and the figure of the state of the even image 54 of projection thereon.Region 55 is for wavelength, to be the lower region of reflectivity of the laser of 532nm left and right.That is, region 55 is for the lower region of the reflectivity of green laser.If take the even image 54 be projected, to become with green be the purple of complementary color relation in region 55.Therefore, can determine reflectivity according to the image photographing.Image correction controller 41 (Fig. 1) uses this reflectivity to revise the color of image, increases the green composition of projection master image of 55 in region.According to this structure, can obtain the master image of the deteriorated high image quality being inhibited of the image quality that the difference by the reflectivity of projectual surface causes.

In addition, also can be according to the brightness of the brightness correction master image of projectual surface.In the case, can distribute according to the briliancy of captured even image A, know the distribution of returning to the light quantity user's eye from projectual surface.According to the brightness Degree distributions master image of captured even image, revise.For example, for the low region of the briliancy of taken even image, because the light quantity of returning in user's eye is few, therefore, by user, regarded as dark areas.Image correction controller 41 carries out image correction, to improve the briliancy of the master image that is projected to this region.Like this, even when the reflection of light direction of projectual surface or scattering of light degree change because of the difference in region, user also can be observed the master image of uniform brilliance.

In addition, also can use can High Speed Modulation spatial modulation element during as spatial modulation element 6, the time-division is ceded territory projection image of all kinds to form even image A.Figure 10 A represent with time partitioning scheme red image, green image and the blue image of projection form the situation of even image A successively.As shown in Figure 10 A, after projection goes out to form R, G, the B of master image main image signal of all kinds, insert R, G, the B datum-correction graph image signal of all kinds that forms even image A.

In the present embodiment, also similarly to Example 1, this datum-correction graph picture is synchronously only taken in the projection of imaging apparatus 40 and datum-correction graph picture opportunity.

And the related imaging apparatus 40 of the present embodiment is also same with the situation of embodiment 1, can not there is the function of color image shot.In the case, can only utilize the light and shade of the briliancy of taken even image A to determine the reflectivity corresponding to incident light wavelength.So, owing to using the imaging apparatus of the camera function without coloured image, therefore can realize the cost degradation of projecting apparatus.

In addition,, as the related light source of the present embodiment, comparatively it is desirable to use such as the less laser of the spectrum widths such as semiconductor laser (spectrum width).Its reason is, because the spectrum width of semiconductor laser is little, therefore, color rendering scope is wider than bulb or LED.Figure 11 means the figure of the color rendering scope of LASER Light Source and LED.Figure 11 is the chromatic diagram representing with color coordinate x and color coordinate y, 85Shi viewing area, region.Color coordinate 91R is the color coordinate of red laser, and color coordinate 91G is the color coordinate of green laser, and color coordinate 91B is the color coordinate of blue laser.Color coordinate 92R is the color coordinate of red LED light, and color coordinate 92G is the color coordinate of green LED light, and color coordinate 92B is the color coordinate of blue LED light.Region 86 is the color rendering scope regions while using red laser light source, green laser light source and blue laser light source as light source, and region 87 is the color rendering scope regions while using red LED, green LED and blue led as light source.For example, the color coordinate 89 that the color coordinate with the image of main image signal is Figure 11, according to the characteristic of the reflectivity of projectual surface, the color of taken image is color coordinate 88.Now, in order to make color coordinate 89 that master image has identical with the color coordinate 88 of taken image, need to strengthen green light.Due to the color coordinate 91G of green laser than the color coordinate 92G of green LED light further from color coordinate 88, therefore, green laser can make color coordinate 88 be varied to color coordinate 89 with the power lower than green LED light.According to this structure, can to the color of master image, revise with lower power consumption.And, can realize the projecting apparatus with broad color rendering scope.

(embodiment 3)

Below, with reference to Figure 12 to Figure 13, the projecting apparatus that embodiments of the invention 3 are related is described.

Each related projecting apparatus of the present embodiment has the basic structure that the projecting apparatus 22 related with the embodiment 1 shown in Fig. 1 is identical.Therefore, the structure identical with embodiment 1 used to same-sign detailed.

In the present embodiment, also be by the control of the image correction controller (display control unit) 41 shown in Fig. 1, between periodicity main image signal, insert for projection modification the datum-correction graph image signal with image, this datum-correction graph similarly is on the image time integral after-vision beyond master image, to be the image of the uniform picture of white or grey, but it is image in 2 D code that this datum-correction graph looks like, and can comprise various information.That is, the difference of the present embodiment and the various embodiments described above is, uses the pattern image consisting of image in 2 D code A and image in 2 D code B as datum-correction graph picture.

Figure 12 A represents the image in 2 D code A as datum-correction graph picture and frame.The image in 2 D code B as datum-correction graph picture that Figure 12 B represents to make the briliancy reversion of this Quick Response Code A to form.If by these image in 2 D code A and image in 2 D code B time integral, on these image visions, be the image of the uniform picture of white or grey, therefore, user can see master image and can not see Quick Response Code.

The related imaging apparatus 40 of the present embodiment is synchronously taken with each projection of image in 2 D code A opportunity.Thus, can obtain at main image signal, be projected between the Quick Response Code A that inserts, and obtain the information in image in 2 D code A that is included in.Like this, if use the image in 2 D code A of inclusion information, the method for with spended time, illumination light being modulated to the information that sends is compared, and can transmit more information.

In the present embodiment, image correction controller 41 (Fig. 1) has the function as the analysis unit of obtaining information from the taken Quick Response Code of imaging apparatus 40.

Imaging apparatus 40 is same with the structure of Fig. 2 A, also can synchronously take opportunity with each projection of image in 2 D code A and image in 2 D code B.In the case, can obtain information and revise master image by image in 2 D code A, by image in 2 D code B, revise master image.Or, also can only obtain information by image in 2 D code A, and revise master image by image in 2 D code B.

And each datum-correction graph image signal of two dimensional image A can be same with Fig. 4 A, inserted successively make to form master image (R) image, (G) image, (B) image by after each main image signal of projection successively; Also can be same with Fig. 2 A, inserted simultaneously make to form master image (R) image, (G) image, (B) image by after each main image signal of projection successively.

In addition, also use can look like image in 2 D code A and image in 2 D code B and other datum-correction graphs to combine, for example, image in 2 D code A and image in 2 D code B are inserted between master image and after projection, checked pattern image A and pattern image B are inserted between master image and projection.Like this, can be by Quick Response Code to user's transmission of information, and projection is on one side suitable for revising the datum-correction graph picture (checked pattern image or evenly image etc.) of the color on projectual surface or shape etc., coordinate the projectual surface that at any time change and rightly revise master image on one side.

And, if Quick Response Code and other datum-correction graph pictures are all inserted between master image, also can make the insertion frequency of Quick Response Code lower than the insertion frequency of other datum-correction graph pictures.Its reason is, even if the transmission of information of take is main Quick Response Code and inserts and also can give full play to information transfer function with the interval of several seconds, the like that insertion frequency of other datum-correction graphs that need to not insert to revise master image in order to follow the projectual surface that constantly changes.In addition,, when Quick Response Code consists of image in 2 D code A and image in 2 D code B as described above, unquestionable, a pair of image of these two image in 2 D code A, B should approach in time and insert between master image, so that user can not see Quick Response Code.

The related projecting apparatus of the present embodiment also can comprise synchronization signal generation apparatus, synchronizing signal dispensing device and synchronizing signal receiving system.Figure 13 represents that a plurality of users use the situation of the related projecting apparatus of the present embodiment.

When many people use projecting apparatus, may occur that master image shines upon mutually.And the image of projection is made by individual, sometimes also can be required to provide this image is this information of when and where being read into by whom.

In the present embodiment, a plurality of projecting apparatus 25 and 26 comprise the 29X of signal transmitting and receiving portion and the 29Y of the synchronizing signal 27 that sends or receive the projection opportunity that represents image in 2 D code, use synchronizing signal 27 to make the projection of image in 2 D code synchronous opportunity.

When the user X that uses projecting apparatus 25 is by oneself projecting apparatus 25 during towards the image 28 of the user Y institute projection of use projecting apparatus 26, the 29X of signal transmitting and receiving portion of projecting apparatus 25 can receive synchronizing signal 27 from the 29Y of signal transmitting and receiving portion of the projecting apparatus 26 of user Y, only takes the datum-correction graph picture of Quick Response Code.Therefore, user X and user Y can obtain data with the image correlation of the other side institute projection etc. each other.

Therefore, when using many projecting apparatus, can make the projection of datum-correction graph picture of each projecting apparatus synchronous opportunity, thereby just can only take and obtain the datum-correction graph picture at other projecting apparatus of projected image.

(embodiment 4)

Referring to Figure 14, the projecting apparatus that embodiments of the invention 4 are related is described.

The related projecting apparatus of the present embodiment, except comprising the projection optical system and image pickup optical system of the related projecting apparatus of embodiment 1 22, also comprises the lens actuator (lens actuator) (not shown) for driving projecting lens 7.And as shown in figure 14, this projecting apparatus comprises half-reflecting mirror (half mirror) 15 and doubles as the two projection capture lens 16 of projecting lens and capture lens.From the light 66 of a pixel of spatial modulation element 60 output, by half-reflecting mirror 15, doubled as the two projection capture lens 16 projections of projecting lens and capture lens are in the irregular projectual of tool surface 62.In Figure 14, reference marks 63 representation space modulation elements 60 are by the imaging surface of projection capture lens 16 imagings.The light 66 of a pixel of exporting from spatial modulation element 60 images in projectual surface 62.On the other hand, from projectual surface 62 reflection photoimagings in imaging apparatus 61.

Projectual surface 62 has concavo-convex.Therefore, with inconsistent of imaging surface 63 on imaging can be fuzzy.When scioptics actuator (not shown) makes projection capture lens 16 be shifted along optical axis direction (direction of arrow of Figure 14), imaging surface changes in the direction of arrow.Therefore, in the present embodiment, image correction controller 41 (Fig. 1) is differentiated the concavo-convex of projectual surface 62 according to the pixel of the displacement of projection capture lens 16 and now imaging, and the concavo-convex image that adapts to projectual surface 62 is processed.For example, mobile projector capture lens 16, makes the protuberance face of projectual surface 62 become the imaging surface of projection capture lens 16.And fuzzy according to the pixel of the recess face of projectual surface 62, makes projection in the decrease resolution of the master image of protuberance.Like this, regardless of being projected the concavo-convex of object, all can provide the image with uniform resolution.In the present embodiment, because projecting lens doubles as capture lens, therefore can realize miniaturization and cost degradation, thereby the projecting apparatus of small-sized and low power consumption can be provided.

In the related said structure of the present embodiment, also can use the polarization beam apparatus shown in Figure 15 B (polarized beam splitter) 72 to replace half-reflecting mirror 15.

Schematic configuration when Figure 15 A and Figure 15 B represent to use half-reflecting mirror 15 respectively and while using polarization beam apparatus 72.Figure 15 A is the structure chart while using half-reflecting mirror 15, and Figure 15 B is the structure chart while using polarization beam apparatus 72.

Half-reflecting mirror 15 is for example to make 50% light transmission, and reflects the half-reflecting mirror of 50% light.Therefore, whenever light passes through this half-reflecting mirror 15 or by its reflex time, luminous intensity will reduce by 50%.In Figure 15 A, 50% of the light 101 penetrating from spatial modulation element 60 sees through half-reflecting mirror 15 and becomes light 102.And then light 102 is projected in screen by projection capture lens 16.Then, from the light 103 of screen reflection, by projection capture lens 16, it 50% is reflected by half-reflecting mirror 15 and becomes light 104, and is taken by imaging apparatus 75.On the other hand, use the structure of the polarization beam apparatus 72 shown in Figure 15 B to comprise 1/4 wavelength plate 76.Now, as spatial modulation element, comparatively it is desirable to use the liquid crystal display cells 8 that polarisation of light is controlled.1/4 wavelength plate 76 produces the phase difference of 90 degree, for straight line polarization, if slow axis (lag axis) is set as to 45 degree, can obtain circularly polarized light.Liquid crystal display cells 8 is modulated light by controlling polarization.Polarization beam apparatus 72 is the devices that allow light transmission or be reflected according to polarization discrimination, by the polarization of polarization beam apparatus 72 and liquid crystal display cells 8 is alignd in transmission direction, can in the situation that not reducing luminous intensity, make light transmission polarization beam apparatus 72.

The light 105 of the straight line polarization penetrating from liquid crystal display cells 8 sees through polarization beam apparatus 72, by 1/4 wavelength plate 76, becomes circularly polarized light 106, and by projecting capture lens 16 projections in screen.The circularly polarized light 107 coming from screen reflection, by projection capture lens 16, becomes the light 108 of straight line polarization by 1/4 wavelength plate 76.The light 108 of straight line polarization, due to the polarization direction quadrature of the light 105 of its polarization direction and straight line polarization, therefore, through polarization beam apparatus 72 reflections and taken by imaging apparatus 75.

Compare with the structure of the use half-reflecting mirror 15 of Figure 15 A, the structure of the use liquid crystal display cells 8 of Figure 15 B, polarization beam apparatus 72,1/4 wavelength plate 76 can improve the light utilization ratio of projected image and the light utilization ratio of photographic images.Because the light utilization ratio of projected image is high, therefore can provide power consumption low projecting apparatus.And because the light utilization ratio of photographic images is high, therefore, the time for exposure of imaging apparatus is short, can shoot careful image.

That is,, according to above-mentioned structure, owing to can making optical system miniaturization, therefore can realize the miniaturization of projecting apparatus.And, owing to can utilizing expeditiously polarization, therefore can improve light utilization ratio, thereby can realize the low projecting apparatus of power consumption.

And, in the situation that wish realizes the power reducing of projecting apparatus, also can use reflective LCOS (Liquid Crystal On Silicon) 71 as spatial modulation element.Reflective LCOS 71 is compared with transmission-type liquid crystal display element, can improve light utilization ratio.Its reason is, the in the situation that of transmission-type liquid crystal display element, the rectangular distribution that is called as black matrix" (black matrix) is included in the light transmission region of liquid crystal display cells, so aperture opening ratio (aperture ratio) reduces.And the in the situation that of reflective LCOS, owing to can forming at the back side of the reflecting surface as display surface distribution, therefore can improve aperture opening ratio.Figure 16 means the figure of the structure example while using reflective LCOS 71.Because reflective LCOS 71 is used polarization beam apparatus 72 in its structure, therefore need not again prepare polarization beam apparatus 72.The light 73 of the straight line polarization penetrating from light source 70 is polarized beam splitter 72 reflections, and reflective LCOS 71 rotates 90 degree by the polarization direction of any pixel and reflects.Polarization has rotated the reverberation 74 of 90 degree by polarization beam apparatus 72, by 1/4 wavelength plate 76, becomes circular polarization, by image projection in screen.In addition, by imaging apparatus 75 is disposed to the position shown in Figure 16, the light coming from screen reflection becomes straight line polarization by 1/4 wavelength plate 76, and is polarized beam splitter 72 reflections and injects imaging apparatus 75.By being set as this structure, can provide the projecting apparatus of the high and low power consumption of light utilization ratio.

And, when using reflective LCOS 71 as spatial modulation element, comparatively it is desirable to, use the light source of light that penetrates single polarization such as semiconductor laser etc. as light source 70.Reflective LCOS 71, by controlling polarisation of light direction according to picture signal, is modulated light.Therefore the light of, injecting reflective LCOS 71 must be the straight line polarization of polarization alignment.General in the situation that have the light of random polarization, projection optical system allows light transmission polarizing filter so that polarization direction alignment, and removes the composition beyond suitable polarized component.Because laser can penetrate the straight line polarization that polarization aligns, therefore, without the polarizing filter of polarization alignment, thereby can realize, improve light utilization ratio.

(embodiment 5)

Secondly, referring to Figure 17 to Figure 19, the projecting apparatus that embodiments of the invention 5 are related is described.

The difference of the projecting apparatus that the present embodiment is related and each above-mentioned embodiment is, uses the projection pattern of sweep type.Other structures projecting apparatus 22 related with embodiment 1 is identical.

Figure 17 schematically shows sweep type projection pattern.As shown in figure 17, the related projecting apparatus of the present embodiment comprises LASER Light Source 1, collimating lens 4, the first scanning mirror 42, the second scanning mirror 43 and image control portion 44.The light beam penetrating from LASER Light Source 1 becomes the light of almost parallel by collimating lens 4, and is projected in screen 110 by the first scanning mirror 42 and the second scanning mirror 43.Image control portion 44, according to the signal of master image, modulates the power of LASER Light Source 1 in each pixel.The sweep speed of the light of almost parallel is fully faster than the time resolution of human eye, and therefore, the light that user can go out projection is regarded two dimensional image as.

This sweep type projection pattern is owing to being to allow the beam flying of light of almost parallel, therefore, even there is the little pattern image of the fuzzy sense of concavo-convex Shi，Ye projectable when screen 110.Therefore, can improve the precision of image correction, and the master image of high image quality can be provided.

In addition, image pickup part 111 is synchronizeed with scanner section, and the shutter speed of imaging apparatus 40 also can be shorter than the shutter speed that can take whole pattern image.Figure 18 represents the situation of a part for the pattern image that shooting is scanned.In Figure 18, dotted line represents the pattern image 112 of the correction use that is scanned, and solid line represents the pattern image 113 being photographed.As shown in figure 18, pattern image 112 is striped, and image pickup part 111 is taken a striped.Figure 19 means as being projected of screen and on object, has figure when concavo-convex.When existing on object (not shown) as being projected of screen when concavo-convex, for example, the dotted line of Figure 19 is scanned pattern image 114, and solid line is captured pattern image 115.The pattern image 115 being photographed, owing to being a striped in the striped of scanned pattern image 114, therefore, as Figure 19, even when the striped of the pattern image 115 photographing is discontinuous, also can easily know to be projected the concavo-convex of object as screen.Therefore, can revise accurately master image, thereby the master image of high image quality can be provided.

(embodiment 6)

Referring to Figure 20 A and the related projecting apparatus of Figure 20 B explanation embodiments of the invention 6.

The related projecting apparatus 120 of the present embodiment has the basic structure that the projecting apparatus 22 related with the embodiment 1 shown in Fig. 1 is identical.Therefore,, for the structure identical with embodiment 1, use same-sign detailed.

The difference of the projecting apparatus of the projecting apparatus that the present embodiment is related and each above-mentioned embodiment is to possess the function of the image correction that comprises PREDICTIVE CONTROL.Use the frame data of taken pattern image to carry out image correction to the master image of projection.More specifically, for example, according to a upper pattern image and go up a difference between pattern image, anticipation projectual is known from experience and how to be changed, and carries out image correction again.

Figure 20 A and Figure 20 B represent the variation that is projected object 121 and the relative angle of projecting apparatus 120 along with plane, situation about changing as the pattern image of datum-correction graph picture.Taken pattern image 123 when Figure 20 A is illustrated in projecting apparatus 120 and is angle 122 (θ 1) with the relative angle that is projected object 121.Taken pattern image 133 when Figure 20 B is illustrated in projecting apparatus 120 and is angle 132 (θ 2) with the relative angle that is projected object 121.If projecting apparatus 120 is from the state shown in Figure 20 A, the direction of arrow in figure is rotated, and projecting apparatus 120 is expanded into angle 132 (θ 2) with the relative angle 122 that is projected object 121 from 122 (θ 1).If relative angle is expanded into angle 132 (θ 2) from 122 (θ 1),, because the crooked change of the pattern image of projection is large, therefore, taken pattern image is pattern image 133.Like this, can learn that trapezoidal crooked meeting becomes larger if projecting apparatus 120 becomes large with the relative angle that is projected object 121.Can obtain relative angle 122 and relative angle 132 according to taken pattern image 123 and pattern image 133.For example, if relative angle 122 is θ 1, relative angle 132 is θ 2, by following formula, obtains θ 3.

θ3＝θ2+(θ2-θ1)

The relative angle of the NextState of prognostic chart 20B is the state of θ 3, and the master image that will show the next one is revised.According to this structure, can use the variation of taken pattern image earlier to revise master image.Therefore, even when projecting apparatus is when being projected the relative angle of object or relative position and changing at any time, also can provide the more image of high image quality.

(embodiment 7)

The projecting apparatus that embodiments of the invention 7 are related is then described.

The structure of the related projecting apparatus of the present embodiment 7 77 is described referring to Figure 21.

This projecting apparatus 77 is with the difference of the projecting apparatus 22 shown in Fig. 1, comprise the motion sensor 37 that whether datum-correction graph image signal is inserted to the handover information input part 47 between described periodicity main image signal and detect projecting apparatus for switching, the output of image correction controller 41 (switching part) based on handover information input part 47 or motion sensor 37, switches and whether inserts datum-correction graph image signal.

Under the state being fixed at screen (not shown) and projecting apparatus 77, for example, projecting apparatus 77 is placed on while using on desk, need not revises at any time master image.On the other hand, for watching the user of master image, insert datum-correction graph and look like to be equivalent to insert gray image, therefore, the contrast of master image can slight reduction.

Therefore, as mentioned above, fixing at the relative position relation of screen and projecting apparatus 77, need not revise at any time in the situation of master image etc., cut off handover information input part 47, datum-correction graph image signal is not inserted between described periodicity main image signal.Handover information input part 47 for example can be arranged on the switch in the framework of projecting apparatus 77, can be also the remote controller that can control from outside.

According to said structure, can realize and only if necessary just insert datum-correction graph picture to realize the projecting apparatus of the low power consumption of high image quality.

The image correction controller 41 of bringing into play function as switching part also can possess following functions,, insert continuously within the fixed period datum-correction graph picture, and the comparative result of each datum-correction graph picture based on photographing within this period, the necessity of inserting datum-correction graph picture distinguished.That is, if the datum-correction graph picture photographing within the fixed period does not change, judge that the relative position relation of screen and projecting apparatus 77 does not change, and by until insert the interval of next datum-correction graph picture and set longlyer.On the other hand, if the datum-correction graph photographing within the fixed period looks like to change, judge that variation has occurred the relative position relation of screen and projecting apparatus 77, thereby by until insert the interval of datum-correction graph picture and shorten.According to the structure of the present embodiment, user need not operate projecting apparatus 77, can automatically judge whether to insert datum-correction graph picture.

This projecting apparatus 77 comprises the motion sensor 37 of the movement that detects projecting apparatus 77, as switching part, bringing into play the image correction controller 41 of function so controls, make to detect when mobile when motion sensor 37, insert described datum-correction graph image signal, and do not detect when mobile when motion sensor 37, do not insert described datum-correction graph image signal.

This projecting apparatus 77 is by above-mentioned structure, can automatically insert datum-correction graph picture or not insert datum-correction graph picture according to the mobile testing result of motion sensor 37, therefore, can judge whether accurately to revise image, thereby can insert expeditiously datum-correction graph picture.

As motion sensor 37, can use for example angular-rate sensor.When hand-held projecting apparatus 77 carries out projection, can produce angular speed because of the vibration of hand etc.Therefore,, in the situation that being provided with angular-rate sensor as motion sensor 37, if angular speed detected by angular-rate sensor, judging that projecting apparatus 77 is moving, and insert datum-correction graph image signal to start at any time the correction to master image.

In the situation that projecting apparatus 77 possesses the angular-rate sensor of trembling correction for optical profile type hand, also this angular-rate sensor can be utilized as motion sensor 47.As this motion sensor 47, be not limited to angular-rate sensor, can use acceleration transducer, geomagnetic sensor etc. can detect the transducer of the movement of projecting apparatus 77.

(embodiment 8)

Figure 22 A and Figure 22 B mean the figure of the example of the projecting apparatus that embodiments of the invention 8 are related.The related projecting apparatus 22 of the present embodiment comprises imaging apparatus, therefore, not only can be used as projection element, and can be used as imaging apparatus.

As shown in Figure 22 A, this projecting apparatus 22 not only has pattern image 51 is projected to and is projected object to hold the function of the shape be projected object, but also have in taken image, by the function that is present in the object 50 that is projected the 3D shape in object and two dimension (plane) background 80 and separates.By one side irradiation pattern image 51 shooting on one side, be projected object and store the shape that is projected object, on the other hand, in projection pattern image 51, also only do not taking and be projected object.Because the object that is projected that can photograph on one side according to one side irradiation pattern image 51 is resolved the shape that is projected object, therefore, can be projected the object 50 of the 3D shape in object and two-dimentional background 51 separately by being present in, and only intercept object 50 and stored.Therefore the processing (shear treatment (trimming processing)) that, can carry out removing background 51 from taken image and automatically intercept object 50.

Projecting apparatus 22, for example, as shown in Figure 22 B, the image 52 that the back of the body can be cut to the object of extraction is projected to other screens under the state of having removed scape portion part 24.And the image 52 that also back of the body can be cut to the object of extraction synthesizes with other images and carries out projection.

(embodiment 9)

In recent years, use the image display device of trichromatic LASER Light Source to be developed just widely.Its reason is because this image display device has advantages of as follows,, by utilizing the monochromaticjty of laser can obtain the good image of color reprodubility, and, by using electro-optical efficiency semiconductor laser high and that can improve light utilization ratio can realize the equipment of small-sized and low power consumption.Wherein, according to picture signal, allow intensity through the laser scanning of ovennodulation, form the ing image display device of this type of image, can realize further miniaturization and power reducing and portable excellent image display device.In Japanese Patent Publication communique JP No. 2003-29201 (hereinafter referred to as " patent documentation 2 "), disclosed in view of the environment for use of this portable excellent image display device can datum-correction graph as the ing image display device of the position relationship of display unit and image display object.According to patent documentation 2, with measuring Ear Mucosa Treated by He Ne Laser Irradiation image display object, by measuring the incident angle of reverberation directive photodetector, can measure distance between ing image display device and image display object or the shape of image display object according to principle of triangulation, thereby to showing that image revises.

But, for ing image display device in the past, although have recognized that and must revise and show this problem of image according to the shape of the distance between ing image display device and image display object or image display object, but do not touch following problem completely,, when considering the environment for use of portable excellent image display device, must further revise the deteriorated of the image that caused by the difference of the color spot of image display object or decorative pattern, material etc.Namely, can fully be susceptible to and not be on specific screen being in the past used in combination with projecting apparatus etc., but in the situation with the upper show image of the scattering surface of various reflectivity (hereinafter referred to as being projected face), or while making its work when hand-hold scanning type image display device, be projected face mobile situation at any time.Under this situation, must adjust according to the spectral reflectivity that is projected face the image of projection.; on being projected face, there are color spot or decorative pattern or the face that is projected consists of or be projected part when disappearance of face the different parts of material; by image correction being offset to color spot or decorative pattern; or the image that projection light quantity has been corrected according to the reflectivity of each parts; or not by image projection to the disappearance part that is projected face, thereby show image well.But there is the problem that cannot revise based on this spectral reflectivity in ing image display device in the past.

The present embodiment in view of the above problems, its object is to provide a kind of small-sized ing image display device and image correcting method, this small-sized ing image display device has following function,, by image display to various while being projected face, by ing image display device, measured the spectral reflectivity of the face that is projected, and the image based on being projected the spectral reflectivity correction demonstration of face.

Figure 23 represents the schematic configuration of the related ing image display device of embodiments of the invention 9 200.

As shown in figure 23, ing image display device 200 comprises LASER Light Source 201R of all kinds, LASER Light Source 202B, LASER Light Source 203G, drive circuit 204, control part 205, spatial modulation element 206, dichronic mirror 207 to 209, scanner section 210, photodetector 213, correction portion 214 and storage part 215.From LASER Light Source 201R of all kinds, 202B, 203G, penetrate red, blue, green laser.LASER Light Source 201R and LASER Light Source 202B are semiconductor laser.LASER Light Source 203G is the green laser light source of so-called second harmonic (Second Harmonic Generation:SHG), and it has combined by semiconductor laser and has encouraged solid state laser and the second harmonic producing component that penetrates infrared laser.LASER Light Source 201R of all kinds, 202B, 203G are driven by drive circuit 204.The green laser penetrating from LASER Light Source 203G is carried out intensity modulated by the spatial modulation element 206 being arranged on its light path.

As spatial modulation element 206, can use acousto-optic element or electrooptic cell etc.

Dichronic mirror 207 to 209 have reflection specified wavelength light function and allow the function of the light transmission beyond this specified wavelength, and make the optical axis of laser of the different R of wavelength, G, B consistent.Scanner section 210 allows laser 211 scannings be projected face 212.As scanner section 210, for example, can use the driving micro mirror of piezoelectric driven or static.By the laser being projected after face 212 specular scatterings, by photodetector 213, received.Control part 205 is controlled drive circuit 204, scanner section 210 and modulator 206 based on signal of video signal.The output of photodetector 213 is transfused to control part 205, and is recorded in storage part 215 with together with the value of the scan angle of invisible scanning portion 210.The output of correction portion 214 based on photodetector 213 or be recorded in the value of storage part 215 and the spectral reflectivity of each scanning angle of scanner section 210 carries out image correction, will be through the picture signal input control portion 205 of revising.

Figure 24 represents the summary construction diagram of photodetector 213.As shown in figure 24, photodetector 213 comprises circuit substrate 221, is formed on test section 222a, 222b and 222c on this circuit substrate 221. Test section 222a, 222b and 222c are separately installed with the colored filter that allows red light, green light, blue light see through.The laser that is projected face 212 specular scatterings is injected photodetector 222a, 222b, 222c, sees through colored filter, thereby can detect the light income of each optical maser wavelength according to sharp light wavelength.

Circuit substrate 221 is sent to control part 205 using the light income of each optical maser wavelength as the signal of telecommunication.Circuit substrate 221 is adjusted in advance, makes when white light is injected photodetector 213, and red, green, blue light amount signal is identical.For photodetector 222a, 222b, 222c, 3 independently photodetectors can be set, also a photodetector can be carried out to Region Segmentation and used.

The example of the detection signal of the photodetector 213 when Figure 25 A and Figure 25 B represent not use colored filter.Suppose that LASER Light Source 201R of all kinds, LASER Light Source 202B and LASER Light Source 203G work with luminous color sequence pattern of short time (color sequential mode) respectively individually.Now, if describe the luminous intensity of laser along time shaft, as shown in Figure 25 A.If synchronously obtain at short notice the output of photodetector with the luminous opportunity of laser, as shown in Figure 25 B, can measure the specular scattering light intensity of each LASER Light Source.In the case, without colored filter, and circuit can be also single channel, therefore, can simplify the structure of photodetector 213.

The action of the ing image display device of the present embodiment is described with Figure 23.First, the picture signal that control part 205 receives from image input part (not shown), controls drive circuit 204, modulator 206, scanner section 210.Drive circuit 204 drives LASER Light Source 201R, LASER Light Source 202B and LASER Light Source 203G of all kinds, and noise spectra of semiconductor lasers is that LASER Light Source 201R, LASER Light Source 202B directly modulate.Owing to cannot directly modulating at high speed the LASER Light Source 203G as SHG green laser, therefore utilize modulator 206 to modulate.According to picture signal, R, the G of intensity modulated have been carried out rightly, the laser of B synthesizes a branch of light beam by dichronic mirror 207 to 209.Then, as laser 211, by be controlled the scanner section 210 that portion 205 drives according to picture signal, scan, form image being projected on face 212.Each wavelength by photodetector 213 for laser 211, detects the laser by perspective plane 212 specular scatterings.At this, laser 211 is carried out to separated function according to each wavelength and also can be realized by the photodetector 213 of the subsidiary colored filter shown in Figure 24.And, also can adopt each wavelength that makes shown in Figure 25 A and Figure 25 B to there is the illumination mode of time difference.Intensity by each wavelength of photodetector 213 detected laser is sent to control part 205.Control part 205 by represent the scan angle of scanner section 210 value, be that the driving amount of two-axis mirror or the signal of scan angle test section (not shown) and the signal of photodetector 213 form one group and be recorded to storage part 215.Owing to recording the spectral reflectivity of each scan angle in storage part 215, therefore, the spectral reflectivity that can obtain the face of being projected 212 distributes, and correction portion 214 is based on this information, to revising from the picture signal of image input part (not shown) input control portion 205.

With Figure 26 A, Figure 26 B, Figure 27 A and Figure 27 B, the operation in order to datum-correction graph picture that the present embodiment is related is described.

Figure 26 A and Figure 26 B mean the figure of the reflection light quantity of scan line on the face of being projected 212 and each wavelength on scan line.The face that is projected 212 shown in Figure 26 A and Figure 26 B is projected face 212a by different two of reflectivity and 212b forms.The 231st, as the scan line of the track while scan of laser 211, scan line 231 set and form scanning area 232.Region 233,234 and 235 is to be projected the spectral characteristic of the reflectivity on face 212 and different region around, for example, be color spot or be with coloured decorative pattern.And, be projected the state that face 212 lacks in the upper right corner with respect to scanning area 232.For convenience of explanation, suppose to show the image of white comprehensively in scanning area 232.Now, if be projected spectral reflectivity and the Wavelength-independent of face 212, because white light is injected photodetector 213, therefore, red, green, blue light amount signal becomes identical.

In Figure 26 A, with respect to the signal of the photodetector 213 of scan line 231a as shown in Figure 26 B.In existence, be projected the position of face 212, detect the redness, green of same intensity, blue light amount signal, and the position of disappearance portion of dropping on the face of being projected 212 from scan line 231a, cannot detect redness, green, blue whole signal.Therefore, predetermine the critical value of appointment, when the light amount signal of three kinds of colors is critical value when following, can judge the face of being projected 212 disappearances.It is that light amount signal can not be 0 yet sometimes because bias light sometimes around can enter photodetector that critical value is set.Like this, as long as can detect the disappearance portion of the face of being projected 212, just can, by not making Ear Mucosa Treated by He Ne Laser Irradiation cut down electric power to disappearance portion, therefore be of value to the power saving of portable equipment.

Figure 27 A also means the figure of the reflection light quantity of scan line on the face of being projected 212 and each wavelength on scan line.In Figure 27 A, with respect to the signal of the photodetector 213 of scan line 231b as shown in Figure 27 B.In existence, be projected the position of face 212, detect the redness, green of same intensity, blue signal, and the position in region 233 of dropping on the face of being projected 212 from scan line 231b, red, green, blue light amount signal dissimilates.Because the ratio of the reflection light quantity of red light amount signal in region 233 is high, so can judge have the color spot that red composition is high in region 233.Therefore, can when laser scanning region 233, strengthen green, blue light quantity to revise color spot.Or also can reduce red light quantity to revise color spot.When reducing red light quantity, although it is poor to produce light and shade with region around, because power consumption reduces, therefore, be of value to the power saving of portable equipment.If be projected the detection position 241b on face 212a and be projected the 241c place, detection position on face 212b, signal to the photodetector 213 with respect to scan line 231b compares, because the light amount ratio of the redness at the redness at 241b place, detection position, green, blue light amount ratio and 241c place, detection position, green, blueness equates, therefore, can judge that detection position 241b and 241c place, detection position do not exist aberration, but exist light and shade poor.Like this, by red, green, blue light amount ratio being compared scanning area 232 is interior, color spot can be detected or light and shade is poor, therefore, as mentioned above, by revising the light quantity of LASER Light Source 201R of all kinds, LASER Light Source 202B and LASER Light Source 203G, can demonstrate the image of the high image quality that is not subject to the color spot of the face that is projected or the poor impact of light and shade.In addition, in an embodiment of the present invention, suppose for the purpose of simplifying the description white light to expose to the face of being projected, but be not limited to white light, also can obtain spectral reflectivity according to common demonstration image and distribute.In the case, owing to knowing in advance the output ratio of trichromatic laser according to the image information showing, therefore, by the light amount ratio of trichromatic laser that itself and photo-detector measurement are gone out, make comparisons, can know spectral reflectivity distribution.And the light summation by trichromatic laser that photo-detector measurement is gone out compares, and also can learn that reflectivity distributes.

In the present embodiment, the structure that comprises a plurality of LASER Light Source has been described, certainly also can have used single LASER Light Source, in the case, without colored filter.

(embodiment 10)

Figure 28 represents the schematic configuration of the ing image display device of the present embodiment 10.As shown in figure 28, the difference of the ing image display device shown in this ing image display device and Figure 23 is, it comprises positional stability test section 251.Positional stability test section 251 detects posture change or the change in location of ing image display device, and detection signal is sent to control part.Particularly, positional stability test section 251 so long as acceleration transducer, geomagnetic sensor or gyroscope etc. can sense acceleration, the device of angular acceleration, gradient etc.

The ing image display device of the present embodiment comprises positional stability test section 251, therefore, can detect posture change or change in location.Because the amount when posture change or change in location is when larger, the position of shown image also can significantly change, so even if do not carry out image correction, beholder can not take notice of image quality yet, therefore can stop image correction.On the other hand, if there is no posture change or change in location, show that the position of image also immobilizes so, therefore, can obtain by carrying out image correction the demonstration image of high image quality.Now, when control part 205, according to the detection signal of positional stability test section 251, judge while there is not posture change or change in location, can not can cause the degree that beholder discovers, irradiate in short time the data that white light is used to obtain image correction.When the amount of posture change or change in location is lacked, no matter carry out or do not carry out image correction and all can.In order to obtain the reduction and the balance that the image quality that shows image improves of the electric power of following spectral reflectivity distribution measuring, also can change the measuring frequency for the spectral reflectivity distribution of image correction according to the frequency of posture change or change in location.That is, the if there is no variation of posture/position, can only measure a spectral reflectivity distribution at first, if the change frequency of posture/position is large, repeatedly measure spectrum reflectivity distributes.Like this, due to change in location that can detection display image by setting position Detection of Stability portion 251, therefore, can obtain following effect, that is, can be according to having or not change in location to switch whether to carry out image correction, when showing the position of image significantly to change during without image correction, stop image correction, thereby can cut down electric power.

(embodiment 11)

Figure 29 represents the schematic configuration of the ing image display device that embodiments of the invention 11 are related.In Figure 29, for the related identical structure of ing image display device of the embodiment 10 with shown in Figure 28, use same-sign detailed.

As shown in figure 29, this ing image display device comprises the polarization beam apparatus corresponding with the laser of all kinds of R, G and B (polarized beam splitter) 261, detects light source output detector 262, pin hole (pin hole) 264, right-angle prism 266 and the photodetector 267 of the light output of LASER Light Source of all kinds.Light source output detector 262 and photodetector 267 consist of photodiode etc. equally.A pair of light source output detector 262 also can be arranged on same substrate with photodetector 267.And, also can carry out Region Segmentation to same photodiode, the region of one of them is used as to light source output detector 262, and another region is used as to photodetector 267.In the situation that carrying out Region Segmentation, have and realize effect cheaply.This ing image display device also comprises quarter wave plate 263,265.Quarter wave plate 263,265 changes from straight line optical rotation the sharp polarized state of light seeing through into circular polarization.In Figure 29,264 is pin hole, and 266 is right-angle prism.

Figure 28 represents the schematic configuration of the ing image display device that embodiments of the invention 11 are related.In Figure 28, for the related identical structure of ing image display device of the embodiment 10 with shown in Figure 27, use same-sign detailed.

The action of this ing image display device is described with Figure 29 below.

The laser penetrating from LASER Light Source 201 is straight line polarization, and its plane of polarization is rotated a little from seeing through the plane of polarization of polarization beam apparatus 261.Therefore, the laser of incident polarization beam splitter 261 is most of sees through this polarization beam apparatus 261, and a part of laser is injected light source output detector 262 after being reflected, and its light quantity is detected.See through the laser of polarization beam apparatus 261 through after quarter wave plate 263, its polarization state becomes circular polarization, then by dichronic mirror 209, is reflected, and after pin hole 264, by scanner section 210 scannings, is being projected on face 212.

By being projected a laser part for face 212 specular scatterings, be scanned portion's 210 reflections, with the order contrary with outlet, return to pin hole 264 and dichronic mirror 209, and see through quarter wave plate 263.Now, although swash polarized state of light, from circular polarization, revert to straight line polarization, become the straight line polarization of the plane of polarization quadrature of plane of polarization and original straight line polarization.

Therefore, the laser returning is polarized beam splitter 261 reflections, and sees through quarter wave plate 265, by right-angle prism 266 reflection, is again seen through afterwards quarter wave plate 265 twice.The plane of polarization that sees through quarter wave plate 265 and inject the laser of polarization beam apparatus 261 further rotates 90 degree, therefore, sees through polarization beam apparatus 261 and injects photodetector 267.

About LASER Light Source 201R of all kinds, LASER Light Source 202B and LASER Light Source 203G, what the light quantity by laser of all kinds that light source output detector 262 is detected and photodetector 267 detected compares from being projected the light quantity of the laser that face 212 returns, can obtain the reflection of the face of being projected 212, the spectroscopic data of scattering, therefore, by making comparisons and revise with original picture signal, can demonstrate the image that is not subject to the high image quality that the difference of the color spot of the face that is projected 212 or reflection, scattered power affects.

The output that can detect from LASER Light Source 201R of all kinds, LASER Light Source 202B and LASER Light Source 203G by light source output detector 262 is set in the present embodiment.Its result, even if the output of LASER Light Source 201R of all kinds, LASER Light Source 202B and LASER Light Source 203G exists fluctuation, also can detect the color spot of the face of being projected 212 or reflection, scattered power accurately.And, by detected the light quantity of the laser returning via scanner section 210 by photodetector 267, can detect accurately the color spot of the part that is subject to Ear Mucosa Treated by He Ne Laser Irradiation of the face of being projected 212 or reflection, scattered power.

And, by pin hole 264 is set, can block from the light beyond the part that is subject to Ear Mucosa Treated by He Ne Laser Irradiation of Projection Division 212, therefore, can detect more accurately color spot or the reflect/scatter rate of the part that is subject to Ear Mucosa Treated by He Ne Laser Irradiation.

In addition, the lower limit of laser angle of flare can decide according to beam diameter and wavelength, and for example, if the red laser that wavelength is 630nm, and beam diameter is 1mm, and the lower limit of angle of flare is 0.8mrad.In fact as a rule, angle of flare can reach 2 to 3 times of lower limit, therefore, can consider in advance and have the possibility that is expanded to about 2.4mrad.

Therefore, for being blocked, the part of the laser that do not make to return from scanner section can not pass through pin hole 264, and allow this laser all by pin hole 264, if the diameter of the laser in scanner section 210 is made as to D (m), when the distance between scanner section 210 and pin hole 264 is made as to L (m), more than the diameter of pin hole 264 (m) can being made as to D+L * 0.0024.But also learn, even if comprise the back light from the scanning position of adjacency, be also difficult for distinguishing the deteriorated of image quality, therefore, the diameter of pin hole 264 (m) is made as below D+L * 0.0072.

(embodiment 12)

Figure 30 represents the schematic configuration of the ing image display device that embodiments of the invention 12 are related.In Figure 30, for the related identical structure of ing image display device of the embodiment 11 with shown in Figure 29, use same-sign detailed.

As shown in figure 30, ing image display device comprises LASER Light Source 201R of all kinds, LASER Light Source 202B, LASER Light Source 203G, drive circuit 204, control part 205, spatial modulation element 206, dichronic mirror 207 to 209, scanner section 210, correction portion 214, storage part 215, positional stability test section 251 and pin hole 264.

Similarly to Example 9, LASER Light Source 201R and LASER Light Source 202B directly modulate Output of laser intensity by drive circuit 204.The intensity of the green laser penetrating from LASER Light Source 203G, by drive circuit 204, is modulated by the spatial modulation element 206 being arranged in its light path.

Ing image display device 200 also comprises optical splitter element 271, the photodetector with polarization holography and diffraction grating hold concurrently light source output detector 272, quarter wave plate 273,274 and mirror 275.

Optical splitter element 271 is according to the polarization direction of the laser of incident, diffraction/transmission to be switched, and according to sharp light wavelength, carries out the optical element of diffraction.The related optical splitter element 271 of the present embodiment is set as, in the situation that plane of polarization is parallel with the paper of Figure 30, to the direction diffraction perpendicular to this paper.

Figure 31 means the hold concurrently vertical view of light source output detector 272 of photodetector.The detector light source output detector 272 of holding concurrently comprises the light source output detections 272a of portion, 272b and 272c and optical detection part 272d, 272e, 272f.The photodetector light source output detector 272 of holding concurrently carries out Region Segmentation by photodiode and forms.In Figure 30, the laser penetrating from LASER Light Source 201R of all kinds, LASER Light Source 202B, LASER Light Source 203G, similarly to Example 11, its part is polarized beam splitter 261 reflections, and diffracted due to the difference of wavelength at optical splitter element 271, and inject the light source output detections 272a of portion, 272b, the 272c shown in Figure 31.

In the present embodiment, the longest laser of wavelength is injected 272c, and the shortest laser of wavelength is injected 272a.That is, blue laser, green laser, red laser are injected respectively the light source output detections 272a of portion, 272b, 272c in this order.

Then, from being projected the laser that face 212 returns, by quarter wave plate 273, polarization beam apparatus 261, quarter wave plate 274, mirror 275, polarization beam apparatus 261, inject optical splitter element 271 successively.Parallel owing to injecting the plane of polarization of laser and the paper of Figure 30 of optical splitter element 271, therefore, by polarization holography to the direction diffraction perpendicular to this paper, then, diffracted due to the difference of wavelength, and inject the light source output detector shown in Figure 31 hold concurrently optical detection part 272d, 272e, the 272f of photodetector 272.The light quantity that the light quantity detecting by comparison light source output detections portion and optical detection part detect, can obtain the reflection of the face of being projected 212, the spectroscopic data of scattering, therefore, by making comparisons and revise with original picture signal, can demonstrate the image that is not subject to the high image quality that the difference of the color spot of the face that is projected 212 or reflection, scattered power affects.

In the structure of the present embodiment, by the light source output detector of LASER Light Source 201R of all kinds, LASER Light Source 202B and LASER Light Source 203G and photodetector is in addition integrated, can obtain and realize effect small-sized and that cost is low.

(embodiment 13)

Figure 32 means the figure of the structure of the ing image display device that embodiments of the invention 13 are related.In Figure 32, for the related identical structure of ing image display device of the embodiment 12 with shown in Figure 30, use same-sign detailed.

In Figure 31 (should be Figure 32), 281 is multiplier, and input signal is carried out multiplying and exported.282 is low pass filter (low pass filter), removes the alternating component of input signal and exports flip-flop.In the present embodiment 13, control part 205 is except based on signal of video signal, and also the modulation signal based on for example 100MHz is controlled drive circuit 4.LASER Light Source 201R of all kinds, LASER Light Source 202B, LASER Light Source 203G are except modulated, being also carried out modulation with 100MHz based on signal of video signal.By hold concurrently optical detection part 272d, the 272e of light source output detector 272, the signal that 272f detects of photodetector, be transfused to multiplier 281.In multiplier 281, also input has the modulation signal from the 100MHz of control part 205.

In Figure 32,281 is multiplier, and input signal is carried out multiplying and exported.282 is low pass filter, removes the alternating component of input signal and exports flip-flop.In the present embodiment 13, control part 205 is except based on signal of video signal, and also the modulation signal based on for example 100MHz is controlled drive circuit 4.LASER Light Source 201R of all kinds, LASER Light Source 202B, LASER Light Source 203G are except modulated, being also carried out modulation with 100MHz based on signal of video signal.By hold concurrently optical detection part 272d, the 272e of light source output detector 272, the signal that 272f detects of photodetector, be transfused to multiplier 281.Owing to also inputting and having the modulation signal from the 100MHz of control part 205 in multiplier 281, therefore, multiplier 281 is only exported as flip-flop usining the composition of 100MHz modulation in the signal being detected by photodetector 272d, 272e, 272f, and noise composition is exported as alternating component.Because the low pass filter 282 in stage after multiplier 281 only takes out flip-flop, exported, therefore, the detection signal of having removed noise composition is transfused to control part 205.In the present embodiment, output by the LASER Light Source 201R to of all kinds, LASER Light Source 202B, LASER Light Source 203G is modulated, and according to modulation signal, the detection signal being detected by optical detection part is synchronously detected, the detection signal that noise is few can be obtained, therefore high-precision correction can be realized.

As mentioned above, projecting apparatus involved in the present invention is characterised in that and comprises: light source; The modulating sections of the light penetrating from described light source being modulated based on picture signal; By the described image signal output that comprises main image signal periodically to described modulating sections and shows the display control unit of control; Projection is through the Projection Division of the light of described modulating sections modulation; The image pickup part of the image of the light of shooting based on going out from the projection of described Projection Division, wherein, described display control unit will insert between described periodicity main image signal with the datum-correction graph image signal of image for projection modification, and this datum-correction graph similarly is when by image time integral, to be visually the image of the uniform picture of white or grey.

According to above-mentioned structure, be visually the datum-correction graph picture of the uniform picture of white or grey owing to inserting image time integral beyond master image between the signal in periodicity master image, therefore, watch the user of master image can not see datum-correction graph picture.Thus, can suppress the deteriorated of master image image quality and insert datum-correction graph picture.And, if take this datum-correction graph picture for image correction by image pickup part, can realize the deteriorated of available simple STRUCTURE DEPRESSION master image image quality, and coordinate the projecting apparatus that object is revised image that is projected changing at any time.

Comparatively it is desirable to, this datum-correction graph picture is synchronously only taken in the projection of described image pickup part and described datum-correction graph picture opportunity.

According to above-mentioned structure, do not take the master image that the driving frequency with appointment is periodically projected, but in time only take between periodicity master image and this master image datum-correction graph picture that purlieu is not inserted.Like this, do not need extremely to require the image of instantaneity to process completely, such as the separating treatment of master image and datum-correction graph picture or the processing etc. of extracting datum-correction graph picture from master image out.

Comparatively it is desirable to, described datum-correction graph looks like to comprise at least plural image, once these images by time integral, the color in image surface or the difference of briliancy can be cancelled out each other.

So, datum-correction graph picture can be the combination of at least plural image, once these images by time integral, the color in image surface or the difference of briliancy can be cancelled out each other.Therefore, each datum-correction graph looks like can be used as the combination of shades of colour, briliancy, picture pattern, with the degree of freedom compared with high, forms.

Comparatively it is desirable to, described Projection Division is with datum-correction graph picture described in white light projection.

According to said structure, can reduce the modulating frequency of datum-correction graph picture, thereby can realize the projecting apparatus of low cost and low power consumption.

Comparatively it is desirable to, the projection of described Projection Division at least comprises the described datum-correction graph picture of red image, green image and blue image.

According to said structure, when take datum-correction graph as time, due to the impact that can reduce as the reflectivity of the projectual surface of screen, therefore, can take accurately datum-correction graph picture.

Comparatively it is desirable to, the projection of described Projection Division at least comprises the datum-correction graph picture of two images that have complementary color relation.

According to said structure, can reduce the modulating frequency of datum-correction graph picture, thereby can realize the projecting apparatus of low cost and low power consumption.

Comparatively it is desirable to, described Projection Division projection modification image, the color that is projected object itself or briliancy that this datum-correction graph picture is photographed by described image pickup part in offsetting during the non-projection of the master image with assigned frequency projection are the image of uniform white or grey visually when by time integral in projectual dignity.

According to said structure, owing in fact also datum-correction graph picture can being used for to color correct or the briliancy correction of master image, therefore, can realize the more projecting apparatus of the master image of high image quality of projection.

Comparatively it is desirable to, described datum-correction graph looks like at least plural pattern image that comprises briliancy reversion.

According to said structure, pattern image can be inserted to master image and by user, do not seen.

Comparatively it is desirable to, described pattern image at least one of them is carreau.

According to said structure, can easily know concavo-convex as the projectual surface of screen.

In above-mentioned structure, comparatively it is desirable to, also comprise based on the taken described datum-correction graph picture of described image pickup part, the correction portion that described main image signal is revised, the distortion of described correction portion correction master image.

In the case, owing to can distorted image being revised according to the pattern image photographing, projection master image under the state that can not seen by user at pattern image, therefore, can realize the projecting apparatus of high image quality simultaneously.

Comparatively it is desirable to, described pattern image at least one of them is Quick Response Code.

According to said structure, Quick Response Code can be inserted to master image and do not make the image quality of master image deteriorated, and by user, do not identified.

In above-mentioned structure, comparatively it is desirable to, also comprise the analysis unit of obtaining information the described Quick Response Code photographing from described image pickup part.

According to said structure, can be from insert the Quick Response Code of master image obtaining information.

Comparatively it is desirable to the even image that described datum-correction graph picture is one or more.

According to said structure, can easily know the reflectivity that is projected object as screen.

In above-mentioned structure, comparatively it is desirable to, also comprise based on the captured described datum-correction graph picture of described image pickup part, the correction portion that described main image signal is revised, the color of described correction portion correction master image.

According to said structure, can to color, revise according to the even image photographing, projection master image under the state that can not seen by user at pattern image, therefore, can realize the projecting apparatus of high image quality simultaneously.

Comparatively it is desirable to, use LED as described light source.

In the case, cut apart image display pattern owing to can realize by the on/off of described light source time, therefore, can remove necessary colour wheel in the situation that of bulb source, thereby can realize projecting apparatus cheaply.And, because light source itself is little, therefore, can realize small-sized projecting apparatus.

Comparatively it is desirable to, use LASER Light Source as described light source.

In the case, in the time of can realizing by the on/off of described light source, cut apart image display pattern, thereby can realize projecting apparatus cheaply.And, because light source itself is little, therefore, can realize small-sized projecting apparatus.In addition,, because the spectrum width of LASER Light Source is little, therefore, color reprodubility is excellent, easily carries out with respect to the color correct that is projected the master image of object.

In above-mentioned structure, comparatively it is desirable to, the projecting lens that described Projection Division comprises the light that projection modulated by described modulating sections, described image pickup part is also used as capture lens by described projecting lens.

In the case, lens can be also used as to projecting lens and capture lens, thereby can realize small-sized and projecting apparatus cheaply.

Comparatively it is desirable to, described Projection Division comprises: according to polarization separation polarisation of light beam splitter; And be arranged between described polarization beam apparatus and described projecting lens, make back and forth 1/4 wavelength plate that light by this projecting lens phase difference in outlet and incoming road is pi/2.

According to said structure, owing to can making optical system miniaturization, therefore, can realize the miniaturization of projecting apparatus.And, owing to utilizing efficiently polarization, therefore, can improve light utilization ratio, thereby can realize the projecting apparatus of low power consumption.

Comparatively it is desirable to, described modulating sections is light to be carried out to the spatial modulation element of spatial modulation.

According to said structure, owing to easily improving the power of light source, therefore, can realize the projecting apparatus of high briliancy.

Comparatively it is desirable to, use the veneer liquid crystal display cells of reflection-type as described spatial modulation element.

In the case, light utilization ratio can be improved, thereby the projecting apparatus of low power consumption can be realized.

Comparatively it is desirable to, the changeable a plurality of micro mirrors of use angle are as described spatial modulation element.

In the case, the driving frequency of partitioning scheme owing to can improve time, therefore, can obtain color and interrupt the image further being reduced.And, can further stop user to see the datum-correction graph picture that inserts master image, thereby can make user watch the master image of high image quality.

Comparatively it is desirable to, described modulating sections comprises the scanner section of two-dimensional scan light and modulates the intensity modulated portion that injects the light intensity of scanner section from described light source.

According to said structure, even if projectual surface exists concavo-convex ，Ye, projectable goes out the little image of fuzzy sense.

Comparatively it is desirable to, the driving frequency of described master image is more than 180Hz.

Like this, if there is driving frequency more than 180Hz, the datum-correction graph picture that can make partitioning scheme on time insert more can be not in sight, therefore, can watch the master image of high image quality.

In above-mentioned structure, comparatively it is desirable to, also comprise based on by described image pickup part with the taken a plurality of described datum-correction graph picture of different frames, to being projected the variation of object, predict the arithmetic processing section of computing.

According to said structure, measurable projecting apparatus be projected the variation of relative angle of object or the change of shape that is projected object to revise master image, thereby can watch the master image of high image quality.

In above-mentioned structure, comparatively it is desirable to, also comprise the signal transmitting and receiving portion of the synchronizing signal that sends or receive the projection opportunity that represents described datum-correction graph picture.

According to said structure, when using many projecting apparatus, can allow each projecting apparatus projection modification synchronous with the opportunity of image, can only take and obtain the datum-correction graph picture of other projecting apparatus of projected image.

In above-mentioned structure, comparatively it is desirable to, also comprise whether switching inserts the switching part between described periodicity main image signal by described datum-correction graph image signal.

According to said structure, the changeable datum-correction graph image signal that whether inserts.Thus, at screen, be fixed with the relative position relationship of projecting apparatus, need not revise at any time in the situation of master image etc., can stop inserting datum-correction graph picture.Like this, only just insert where necessary datum-correction graph picture, thereby can realize the projecting apparatus of high image quality and low power consumption.

In above-mentioned structure, comparatively it is desirable to, the motion sensor that also comprises the movement that detects described projecting apparatus, described switching part is being inserted described datum-correction graph image signal when mobile by described motion sensor senses, and does not detect and do not insert described datum-correction graph image signal when mobile at described motion sensor.

According to said structure, can automatically insert datum-correction graph picture or not insert datum-correction graph picture according to the mobile testing result of motion sensor, therefore, can judge whether accurately to revise image, thereby can insert efficiently datum-correction graph picture.

Another kind of projecting apparatus involved in the present invention comprises: light source; The modulating sections of the light penetrating from described light source being modulated based on picture signal; By the described image signal output that comprises main image signal periodically to described modulating sections and shows the display control unit of control; Light through described modulating sections modulation is projected to the Projection Division that is projected object; Described in shooting, be projected the image pickup part of object; And the image production part of the datum-correction graph image signal of image is used in generation for projection modification, this datum-correction graph similarly is the color that is projected object itself or the briliancy being photographed by described image pickup part in offsetting during the non-projection of the master image with assigned frequency projection, it when by time integral, in projectual dignity, is the uniform image of white or grey visually, wherein, described display control unit inserts described datum-correction graph image signal between described periodicity main image signal.

According to said structure, even when projecting apparatus changes at any time with the relative position that is projected object, on the opportunity in also during the non-projection of the master image with assigned frequency projection, by described image pickup part, take at any time and be projected object itself.Then, generate to offset at any time the color or the briliancy that are projected object itself, be the datum-correction graph picture of white or grey uniformly visually, between this datum-correction graph picture insertion periodicity master image when by time integral in projectual dignity.Like this, in fact also datum-correction graph picture can be used for to color correct or the briliancy correction of master image, therefore can realize the more projecting apparatus of the master image of high image quality of projection.

The present invention in addition related ing image display device comprises: LASER Light Source; According to picture signal, drive the drive circuit of described LASER Light Source; Allow the laser scanning penetrated from described LASER Light Source be projected the scanner section of face; According to described picture signal, control the control part of described scanner section; Detect by described in be projected the photodetector of specular scattering light quantity of the laser of face specular scattering; And the correction portion of the intensity of LASER Light Source described in the output signal based on described photodetector and described picture signal correction.

According to said structure, can carry out image correction according to the reflectivity that is projected the wavelength corresponding to described LASER Light Source on face.

And described LASER Light Source can be also to penetrate a plurality of LASER Light Source of the light that wavelength differs from one another.

According to said structure, can, according to the spectral reflectivity that is projected each wavelength corresponding to described a plurality of lasing light emitters on face, carry out image correction.

And described correction portion also can comprise the specular scattering light quantity of each light source of the described LASER Light Source that mapping is detected by described photodetector and the storage part that the scan angle of described scanner section is stored.

According to said structure, can distribute and carry out image correction according to the spectral reflectivity on whole perspective plane.

And described photodetector also can comprise the filter that optionally makes each wavelength of described a plurality of LASER Light Source see through.

According to said structure, can measure the accurate spectral reflectivity for the wavelength of described LASER Light Source.

And, in the time of also can carrying out described a plurality of LASER Light Source, cut apart pulsed drive, and the driving of described photodetector and this LASER Light Source synchronously detects the specular scattering light quantity of this each LASER Light Source opportunity.

According to said structure, do not use wavelength selective filters just can detect the specular scattering light quantity of each LASER Light Source, therefore, can simplify the structure of photodetector.

And, described photodetector also can detect by described in be projected the specular scattering on face after, the laser of incident via described scanner section.

According to said structure, can detect accurately the specular scattering light of injecting from the part of laser of scanning.

And described ing image display device also can also comprise the pin hole being arranged between described scanner section and described photodetector.

According to said structure, due to the specular scattering light that can block beyond the part of laser of self-scanning, therefore, the specular scattering light of detection laser more accurately.

And, also the diameter of the laser of described scanner section can be made as to D, when the distance between described scanner section and described pin hole is made as to L, make the diameter of pin hole for more than (D+L * 0.0024) and for below (D+L * 0.0072).

According to said structure, owing to can making the specular scattering light of the laser of detected object pass through reliably pin hole, and can block the back light from the scanning position of adjacency, therefore, can be with the specular scattering light of higher accuracy detection laser.

And described ing image display device can also comprise with described photodetector and being arranged on same substrate, and detect the light source output detector of the output of described LASER Light Source.

According to said structure, because photodetector and light source output detector are integrated on same substrate, therefore, can make ing image display device miniaturization.In addition, can also, by same substrate, described photodetector and described light source output detector being carried out Region Segmentation and used, can realize cost degradation.

And described ing image display device can also comprise the positional stability test section of the change in location that detects this device.

According to said structure, can carry out image correction according to the movement of ing image display device (change in location).

And described LASER Light Source can be also the LASER Light Source of red, green, blue three looks.

According to said structure, can show full-color image.

And, also light source output detector and the described photodetector of the LASER Light Source of three looks of the described redness of detection, green, blueness can be arranged on same substrate.

According to said structure, can make corresponding to panchromatic ing image display device miniaturization.

And described ing image display device can also comprise acousto-optic element or the electrooptic cell that described sharp light intensity is modulated.

According to said structure, can be externally to laser high-speed modulate, and can be by the solid state laser being excited by semiconductor laser as light source.

And, also can to the output of described LASER Light Source, modulate based on modulation signal, and based on described modulation signal, the output from described photodetector synchronously be detected.

According to said structure, can obtain the good detection signal that signal to noise ratio is larger, thereby can carry out more high-precision correcting process.

And the present invention in addition related image correcting method comprises the steps: according to picture signal, laser to be modulated, and perspective plane is scanned to the step of this laser by scanner section; Step for each wavelength measurement by the light quantity of the laser of described perspective plane specular scattering; The step of the light quantity of each wavelength detecting described in mapping and the scan angle of described scanner section; Based on described map information, control described sharp light intensity, the step that image is revised.

According to above-mentioned method, can distribute according to the spectral reflectivity of the wavelength corresponding to described LASER Light Source on whole perspective plane, carry out image correction.

And said method also can comprise the step of projection white image.By being made as this structure, can easily measure the spectral reflectivity on perspective plane.And, can be also the long specified value of all-wave when following in the light quantity of described each wavelength detecting, do not export described laser.The vibration that like this, can stop laser in the extremely low region of the reflectivity that does not have perspective plane or perspective plane is to reduce power consumption.And, also can the light amount ratio based on described each wavelength detecting control the output intensity of described laser.Like this, can carry out image correction according to the color spot on perspective plane.In addition the output intensity that light quantity that, also can be based on described each wavelength detecting and light amount ratio are controlled described laser.Like this, can carry out image correction according to the average reflectivity inequality on perspective plane.

In industry, utilize possibility

Projecting apparatus of the present invention can be used as portable compact image display unit and is used, but also can be used as the image display device being built in portable equipment, is used.

In addition, embodiment in detailed description of the invention or embodiment are only in order to make technology contents of the present invention become clear and definite, should only not be defined in such concrete example and narrowly be explained, in the scope of spirit of the present invention and next claim item of recording, can implement various changes.

Claims (26)

1. a projecting apparatus, is characterized in that comprising:

Light source;

Modulating sections, modulates the light penetrating from described light source based on picture signal;

Display control unit, controls comprising periodically described image signal output to the described modulating sections demonstration of main image signal;

Projection Division, projection is through the light of described modulating sections modulation;

Image pickup part, the image of the light of shooting based on going out from the projection of described Projection Division, wherein,

Described display control unit, will insert between described periodicity main image signal with the datum-correction graph image signal of image for projection modification, and described datum-correction graph similarly is when by image time integral, to be visually the image of the uniform picture of white or grey,

Described projecting apparatus also has arithmetic processing section, and a plurality of described datum-correction graph picture based on being photographed with different frames by described image pickup part is predicted computing to being projected the variation of object.

2. projecting apparatus according to claim 1, is characterized in that: this datum-correction graph picture is synchronously only taken in the projection of described image pickup part and described datum-correction graph picture opportunity.

3. projecting apparatus according to claim 2, is characterized in that: described datum-correction graph looks like to comprise at least plural image, once these images by time integral, the color in image surface or the difference of briliancy can be cancelled out each other.

4. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: described Projection Division is with datum-correction graph picture described in white light projection.

5. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: the projection of described Projection Division at least comprises the described datum-correction graph picture of red image, green image and blue image.

6. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: the projection of described Projection Division at least comprises the datum-correction graph picture of two images that have complementary color relation.

7. projecting apparatus according to claim 1, it is characterized in that: described Projection Division projection modification image, the color that is projected object itself or briliancy that this datum-correction graph picture is photographed by described image pickup part in offsetting during the non-projection of the master image with assigned frequency projection are the image of uniform white or grey visually when by time integral in projectual dignity.

8. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: described datum-correction graph looks like at least plural pattern image that comprises briliancy reversion.

9. projecting apparatus according to claim 8, is characterized in that: described pattern image at least one of them is carreau.

10. according to the projecting apparatus described in any one in claims 1 to 3, characterized by further comprising:

Correction portion, the described datum-correction graph picture based on described image pickup part is taken is revised described main image signal, wherein,

The distortion of described correction portion correction master image.

11. projecting apparatus according to claim 8, is characterized in that: described pattern image at least one of them is Quick Response Code.

12. projecting apparatus according to claim 11, characterized by further comprising: the analysis unit of obtaining information from the taken described Quick Response Code of described image pickup part.

13. projecting apparatus according to claim 1, is characterized in that: the even image that described datum-correction graph picture is one or more.

14. projecting apparatus according to claim 13, characterized by further comprising:

Correction portion, the described datum-correction graph picture based on described image pickup part is taken is revised described main image signal, wherein,

The color of described correction portion correction master image.

15. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: described light source is LED.

16. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: described light source is laser.

17. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that:

Described Projection Division comprises projection through the projecting lens of the light of described modulating sections modulation,

Described image pickup part is also used as capture lens by described projecting lens.

18. projecting apparatus according to claim 17, is characterized in that, described Projection Division comprises:

Polarization beam apparatus, according to polarization separation light; And

1/4 wavelength plate, is arranged between described polarization beam apparatus and described projecting lens, and making back and forth light by this projecting lens phase difference in outlet and incoming road is pi/2.

19. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: the driving frequency of described master image is more than 180Hz.

20. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that: described modulating sections is light to be carried out to the spatial modulation element of spatial modulation.

21. projecting apparatus according to claim 20, is characterized in that: the veneer liquid crystal display cells that described spatial modulation element is reflection-type.

22. projecting apparatus according to claim 20, is characterized in that: a plurality of micro mirrors that described spatial modulation element is changeable angle.

23. according to the projecting apparatus described in any one in claims 1 to 3, it is characterized in that, described modulating sections comprises:

Scanner section, two-dimensionally scan light; And

Intensity modulated portion, the light intensity of scanner section is injected in modulation from described light source.

24. according to the projecting apparatus described in any one in claims 1 to 3, characterized by further comprising: the signal transmitting and receiving portion that sends or receive the synchronizing signal on the projection opportunity that represents described datum-correction graph picture.

25. according to the projecting apparatus described in any one in claims 1 to 3, characterized by further comprising: switch whether described datum-correction graph image signal is inserted to the switching part between described periodicity main image signal.

26. projecting apparatus according to claim 25, characterized by further comprising: detect the motion sensor of the movement of described projecting apparatus, wherein,

Described switching part, inserts described datum-correction graph image signal when mobile when described motion sensor senses goes out, and when described motion sensor detects, does not insert described datum-correction graph image signal when mobile.

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